Sylvanus d



(No Model.) I l S. -D.SHEPPERD.

WATER MOTOR.

UNITED STATES PATENT OFFICE.-

SYLVANUSV SHEPPERD, OF NEWARK, NEWJERSEY, ASSIGNOR TO THE BACKUS WATER MOTOR COMPANY, OF SAME PLACE.

WATER-MOTO R.

SPECIFICATION forming part of Letters Patent No. 50 1,283, dated August 29, 1898.

vApplication I'iled February '7, 1893. Serial No. 461,352. (No model.)

To all whom it may concern:

Re it known that I, SYLvANUs D. SHEPPERD, a citizen of the United States, residing at Newark, 1n the county of Essex, State of New J ersey, have invented certain new and useful Improvements in Water-Motors, of which the following is aspecitication.

My invention relates to that class of piston water motors in which the tube forming the cylinder is clamped between end sections or heads each of which has a port opening into the end of the cylinder, and in which there are p assages leading from said ports to the openings in a valve case seat. Such a construction in general outline is very old-and 1s also shown in my Patent No. 474,347. In that patent, however, the organization shown has a capacity or function not found in the prior state of the art, to wit: the capability of uslng cylinder tubes of dierent lengths, with the same heads or end pieces and valve case seat. I am thus enabled by unclamping the end pieces and substituting ashorter or longer cylinder tube, as the case may be, to produce a motor of any desired length of stroke. In the patent I accomplish this in the following manner: One of the end pieces has cast with,- formed on, or secured to it, a valve case seat having the two required openings. A channel leads from one opening to the port in said end piece, andthe other opening of the valve case seat is placed in communication with the port in the other end piece by a section of tubing bearing at one end on the valve case seat and at the other on the end piece. The end pieces with the interposed cylinder and section of tubing mentioned are clamped together by any suitable bolts or devices. Obviously, now, if it be desired to change the stroke of such a motor, it is only necessary to loosen or remove the clamping bolts or devices, remove the cylinder and section of tub- 1ng, substitute those of the required length and again clamp the heads or end pieces together. The utility and value of a water motor having such a capacity are obvious, since only one style or pattern of end pieces is re quired for the construction of motors/having dilerent lengths of stroke. The construction shown in the patent has a further utility, viz:

the valve case seat being formed in a single piece, the face thereof may be ground readily and with accuracy, which is not the case in the ordinary construction where there is a seat for the valve case on each head or end piece. Norin the construction shown in the patent is there any occasion to exactly align or properly bring together the two parts of a valve case seat, as is the casein the ordinary construction where a seat is formed on each head, and whereby the accurate alignment of the two seats requires a careful and nice adjustment of the two heads with reference to each other.

l My present invention possesses all the advantages of construction above recited and constitutes an improvement upon the organization shown in my patent referred to. It is desirable that the columns of water, when the motor is in operation', or in other words the passage leading from each opening in the valve case seat to the ports opening into the ends of the cylinder, should be of equal length, as such an arrangement tends toward a smooth, even running of the motor. By my improved construction I am enabled to accomplish this regardless of the varying lengths of cylinders that may be employed. Aside from this, however, it is often necessary or convenient to be able to change the location of the valve case seat and bring it nearer to one or the other end of the cylinder at will to accommodate the motor to the space it has to occupy. This is a very desirable feature since the motors often have to be placed in contracted spaces, and by my invention I am enabled in some cases to place my motor in a space which a motor having no such adjustment could not be introduced into.

I accomplish these ends by making the valve case seat separate from both heads and connecting the heads and seat by interposed hollow or tubular connections. This may be conveniently done by placing between each head and the valve case seat a section of tubing that is clamped in place when the heads are drawn together to clamp the cylinder between them. Obviously by using sections of tubing of equal length, the valve case seat will be located midway between the ends of IOO the cylinder; or `by using tubes'ot different length it may be brought nearer to'either end of the cylinder, as may be desired.

In the accompanying drawings: Figurel is' a longitudinal central section through my improved motor;` and Fig. 2 a detailsectional view on the line 2, 2, of Fig. l.

The cylinder A Which may be an ordinary piece of tubing Without flanges is seated in sockets or recesses in the hollow heads B B between which it is clamped. Each head is provided With a hollow leg or extension C, that projects from` the head inI linewith the cylinder and constitutes an airchamber. It will be noted that these air chambers are not Within the heads, but are arranged outside of them and parallel with the cylinder. The

construction is that shown and described in-` lny patent mentioned and a more detailed de-f scription is unnecessary. The adjacent ends of the legs are provided on each side Withi laterally projecting ianges c through which clamp bolts c', that may of course beef va-j rions lengths pass. Eachhead,pret`erably` at a point diametrieally opposite the leg C; is formed with a seat surrounding an opening (l that communicatesivith the end of thl'e* cylinder. Sections of tubing E are seated therein, and at their opposite ends are seated` against the ends of thevalve case sea't Fand in communication with the ports or pas` sages ff therein. Screw clamping bolts G, may, as shown, pass through the heads; thfe openings tlf therein, the `tube sections,'an;d1 passages f and screwinto thesolid central portion f of the valve Acase seat.' In the' construction shown these screw "bolts, and the bolts c constituteA the only means of clamping the parts together. i Of course`,'hovv ever, any suitable clamping devices, such for instance, as side rods-extending from head to head may be used, but I prefer the construction shown. It is simple,=inexpensive vand efficient. Y Y

:The -Valve case H is bolted to the seat F in the usual manner. The construction of valve shown is that illustrated and'described in my patent and no detailed description is necessary here. All the joints may be'ground true,

or packedwithfwashers, orboth'giound and 5o packed if desired.

The construction, operation and capacities for adjustment or change are obvious. Cylinders of different length may be used, it only bei ngnecessary toernploy tube sections and `clamping bolts of suitable length, and the detachable therefrom, and means for clamping the chambered head, thetinterposedtcylinder, the valve case seat and the tubularsections -together,substantially as described.

2; `The'combination of thefcylinder formed 'of a single' tubular" section, the'fchambe'ed heads,"each havingatiianged 'leg or'extension and having ports opening intoI thecylinder, a

clamping bolt passing through the -tlanges` in the legs, the detachablevalve` case seatl arranged at' one side of thecylin'der and' adjustable longitudinally relativelyto the axis of the; cylinder, theval've ease'havi'ngports `.registering with the *ports in the valve'fcase seat, a removable tubular-connection between `each chambeied head and `the opposite e'nds of theivalvercase seat, and 'aclamping 'bolt passing through the tnbu'larconnectionsand e'acll headyand tirmlyclamping the tubular connections'the headsand th evalve case seat together, `substantially as described.

` 4In testimenywhereof lhave'hereuntosubscribed my name.

i sYLvANUs D. SHEPPERD.

" Witnesses:

WM.W;"BROAD`WELL,

rW1- BsCIssELL. 

